ARM: dts: aspeed: mtjade: Move all adc sensors into iio-hwmon node

Move adc14 and adc15 (battery sensor) into single iio-hwmon node to
correct label to be read by single application for all adc sensors.
Signed-off-by: NQuan Nguyen <quan@os.amperecomputing.com>
Signed-off-by: NThang Q. Nguyen <thang@os.amperecomputing.com>
Reviewed-by: NJoel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/20220228000242.1884-6-quan@os.amperecomputing.comSigned-off-by: NJoel Stanley <joel@jms.id.au>

arch/arm/boot/dts/aspeed-bmc-ampere-mtjade.dts

@@ -339,17 +339,8 @@
 			<&adc10mux 0>, <&adc10mux 1>,
 			<&adc11mux 0>, <&adc11mux 1>,
 			<&adc12mux 0>, <&adc12mux 1>,
-			<&adc13mux 0>, <&adc13mux 1>;
-	};
-
-	iio-hwmon-adc14 {
-		compatible = "iio-hwmon";
-		io-channels = <&adc 14>;
-	};
-
-	iio-hwmon-battery {
-		compatible = "iio-hwmon";
-		io-channels = <&adc 15>;
+			<&adc13mux 0>, <&adc13mux 1>,
+			<&adc 14>, <&adc 15>;
 	};
 };